Chapter 2. Explanation Of Circuit And Op- Eration Block Diagrams - IVT GS-XP12HR-N Service Manual

CHAPTER 2.
GSXP12HRN EXPLANATION OF CIRCUIT AND OPERATION
[1] BLOCK DIAGRAMS
1. INDOOR UNIT
DC power supply circuit
Fan motor phase control circuit
Rotation pulse input circuit
AC clock circuit
Louvre motor drive circuit
Remote controller signal reception circuit
Buzzer drive circuit
CPU reset circuit
CPU oscillator circuit
Room temp. detect circuit
CPU
Heat exchanger pipe thermo circuit
Compensation circuit/ select circuit
Switchover circuit
Serial I/O circuit
Compressor relay drive circuit
LED drive circuit
Auto restart circuit
Test run circuit
Auxiliary mode
Power on circuit
Cluster generator drive circuit
Cluster generator sensor circuit
Service Manual
Room fan motor
Fan motor pulse detect
Flow direction control
Wireless remote control operation
Audible operation confirmation
Room temp. thermistor
Heat exchanger pipe thermistor
Model select
Wireless, preheat, auto restart
Indoor/outdoor control signal I/O
Outdoor unit power supply on/off control
LED display
Test run (forced operation)
Auxiliary mode button ON/OFF
Self diagnostics, fault diagnosis
Cluster generator
2 – 1
GSXP12HRN
AC power
3.15 A
FUSE1
Unit-unit wiring
(AC power and
serial signals)